hello again 'holic
before I offer another tuppence worth, I would just caution against trying to have specific answers to all possible problems because that's just not possible. I don't think that is what you are doing here and are justt exploring some options but be careful nonetheless.
That said, as far as a cut-off height goes for recall items, many companies stipulate no actions below 500 ft AGL except for cancelling noises; raising gear; applying full thrust (if required) and commencing emergency turn if required. So in other words no drills (recall or otherwise) below this height, not even analysing the fault.
Most of that certainly implies a take-off scenario but in terms of drills can easily and often is applied to the approach situation as well BUT it will depend upon each situation because the most ipmortant consideration always is "Fly the aircraft". Easily said but often easily forgotten and especially by the PNF! The PNF's job in these situations is crucial and they must monitor PF's flying and ensure a/c is correctly configured on the correct flight path before even considering any other actions including ATC. Only when you consider it safe to action recall items without compromising flight path safety should you request them. Even 1,000 ft AGL (for example) could be considered too low in some circumstances whilst just above 500 ft may be acceptable in others. The danger comes from a breakdown in proper monitoring of those recall items and you just cannot afford to get it wrong close to the ground. You could consider briefing your colleague to action recall items once on ground at a safe speed BUT even that needs care. Whatever you decide, a Mayday call even on short finals will get help speeding towards you should it be required.
Also worth noting than the vast majority of Engine Fire Warnings are generated by hot gas leaks and often disappear when thrust is reduced towards idle and that could be considered without shutting down the engine at low heights and avoids reconfiguring a/c but will also inscrease workload somewhat with asymmetry and speed control. (much less of a problem cat2/3, just add some thrust)
Sorry, but that all sound a bit like preaching on re-read but I do believe its important and worthy of discussion.
Last edited by Starbear; 4th Oct 2007 at 10:27.